55 lines
1.3 KiB
Markdown
55 lines
1.3 KiB
Markdown
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nohup command > /dev/null 2>&1 &
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> \> 和 >> 区别，> 会先清空，>> 做追加
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### 查看 MAC 地址
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ifconfig 这是最常用的方式
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ip link show
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cat /sys/class/net/eth0/address 查看eth0的mac地址
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dmesg | [grep](https://so.csdn.net/so/search?q=grep&spm=1001.2101.3001.7020) eth0
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### 开放端口
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一个
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iptables -I INPUT -s 172.22.0.0/16 -p tcp --dport 5432 -j ACCEPT
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iptables -I INPUT -s 125.81.157.249 -p tcp --dport 8848 -j ACCEPT
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-m comment --comment "allow SSH to this host from anywhere"
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iptables -P INPUT ACCEPT
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iptables -P OUTPUT ACCEPT
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service iptables save
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所有
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iptables -I INPUT -s 172.3.2.0/24 -p tcp --dport 1:65535 -j ACCEPT
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> iptables 语法
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>https://blog.csdn.net/niuch1029291561/article/details/130935708
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### 获取运行脚本 位置
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> $(dirname $(readlink -f "$0")
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### 获取运行进程
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> ll /proc/进程号
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### 统计当前目录 文件个数 文件 计数
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> ls -hl|grep ^d|wc -l
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### 查看文件 大小
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> du -h -d 1
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### 整体替换 文字
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```shell
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find /data/zhsq/countryside/juyuan/ -type f|grep yml$|xargs sed -i 's/qinghai-country/juyuan-country/g'
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```
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### 查找文件 内容 文件名
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```shell
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grep -rl "pattern" /path/to/directory
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file1.txt
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file2.txt
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file3.txt
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```
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### 图形化界面
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>https://blog.csdn.net/u011811066/article/details/131155350
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